Influence of the Concentration of the Filler and of the type of Matrix on the Properties of Thermoplastics Filled with Shungite Nanoparticles.

The influence of a shungite filler on thermophysical and electrophysical properties of thermoplastics has been investigated. It has been shown that filling the thermoplastics with a shungite filler is particularly efficient at a high concentration of the filler. It is the thermal conductivity and the thermal diffusivity, and also the electrical conductivity that are most substantially increased by shungite with 60 wt.% of fi ling. Here, the influence of shungite is more pronounced in the case of filling with polyamide rather than with polyethylene, which is due to the noticeable nucleating effect of shungite. It has been shown that at an equally high degree of filling, a PA6-based composite exhibits the properties of a conductor, whereas an LDPE-based one remains a dielectric. It has been established that shungite nanoparticles actively interact with the thermoplastic matrix, structuring the polymer and leading to an improvement of the thermophysical and electrophysical properties of a polymeric composite. [ABSTRACT FROM AUTHOR]